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f be a real function such that f(x+y) =f(x)f(y). If f(1) = a, what is the valueof f(50) ?

Question

If be a real function such that

f(x+y)=f(x)f(y) f(x+y) = f(x)f(y)

If f(1)=a f(1) = a , what is the value of f(50) f(50) ?

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Solution

The function f(x+y) = f(x)f(y) is known as a Cauchy functional equation.

Given that f(1) = a, we can find the value of f(50) by using the property of the function repeatedly.

Step 1: We know that f(1) = a.

Step 2: We can express 50 as 1+1+1+...+1 (50 times).

Step 3: Using the property f(x+y) = f(x)f(y), we can write f(50) as f(1+1+...+1) = f(1)f(1)...f(1) (50 times) = aaa*...*a (50 times) = a^50.

So, the value of f(50) is a^50.

This problem has been solved

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